Machine for cleaning blackboard-erasers.



Patented May I3, .1902.

1 J. A. JONES.

MACHINE FOR CLEANING BLAGKBOARD ERASERS.

Ap xicauonmeq m. 14, 1902.

(No Model.)

No. 699,957. Patented May |3.'|902.

J. A. JONES.

MACHINE FOR-CLEANING BLAOKBUARD ERASERS.

. (Application filed Jan. 14, 1902.)

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No. 699,957. Patented May l3, I902;

J. A. JONES.

MAQHINE FOR CLEANING BLACKBQARD' ERAS ERS.

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No. 699,957. Patented May l3, i902) J. A.'JONES. h MACHINE FOB'GLEAN ING BLACKBUARD ERASERS.

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No. 699.957. 9 Patented ma l3, I902.

J. A. JONES.

MACHINE FDR CLEANING BLACKBUARD ERAS EBS.

(Application filed Jan. 14, 1902.\

(No Modefl) 5 Sheets-heet 5,

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JAMES A. JONES, OF LOGANSPORT, INDIANA.

MACHINE FOR CLEANING BLACKBOARD-ERASERS.

SPECIFICATION fo ming part of Letters Patent No. 699,957, dated May 13, 1902.

Application filedllannary 14, 1902. Serial No. 89,755. (No modeL) To all whom it ma/yoonce rw; Be it known that 1, JAMES A. J ONES, a citi= zen of the United States reSiding at Logansport, in the county of Cass and State ofIndiQ ana, have invented certain new and useful; Improvements in Machines for Cleaning Blackboard-Erasers and I do hereby declare the following to be a full, clear, and exact def dscription of the invention, such as will en-' able others skilled in the art to which it appertains to make and use the same.

thrown back; Fig. 3, an end elevation with the end of the casing removed; Fig. 4, a vertical transverse section 011 line 4 4, Fig. 2;"

Fig. 5, a perspective of one of the eraserholders, the table on which the erasers are beaten, and the eraser-feed mechanism; Fig. 5, a transverse section vof'an eraser-holder; Fig. 6, an elevation showing the eraser-feeding mechanism; Fig. 7, a perspective of one of the tables on which the erasers are beaten; Fig. 8, a side elevation of the mechanism for operating the eraser-heaters, and Fig. 9 a perspective of the brackets which support the cam-shaft.

Reference being bad to the drawings and the numerals thereon, 1 indicates an inclosing case or box in which the machinery is supported and whose cover 2 is hinged thereto and provided with ingress-passages 3 for the introduction of erasers 4, and on the inside of said cover and directly under the openings or passages 3 are doors 5, normally held to their seats on the cover 2 by springs 6-, oneend Of',WhlGh engages an arm 7 on a rod 8, to which the doors are secured to move therewith, and the opposite ends of the springs are secured to the cover, as'shown in Figs. 2 and 4. The doors are opened by the person operating the machine by pushing an eraser after it has been beaten.

eraser through the passage 3, as shown in Fig.2 4.

- The machine illustrated shows three sets of cleaning mechanisms, each being a duplicate of-the other and all driven from one source of power, and each is provided with a chute 9, supported byv brackets 14 for conducting erasers located below the opening 3, and its perforated section 19, on which erasers are beaten, and an opening 20, passing through Which-the erasers are engaged by a brush 21 to remove any loose dust on the face of the The erasers are engaged on one side by a feed-roll 22 and on. the opposite side by a resilient arm or spring 23to guide-the erasers to the holder 18 and the roll 22 to assist the rolls 16 and 17 in feeding the erasers to the eraser-holder.

The arm 23 is supported in a post 24 on the table 12 and is set to engage and hold the erasers in, line with the eraser-holder while.

the roll 22 is pressing against the opposite side of the erasers. The rolls 16 are supported onya shaft 25, the rolls 17 on shaft 26, to which motion is imparted by sprocketwheels 27 28, chain 29 engaging sprocketwheel 30 on the power-shaft 31, to which motion is imparted by crank 32, and on the shaft 26 are miter gear-wheels 33, which engage like wheels 34 on shafts 35, which support rolls 22. (See Fig. 6.) The brushes 21 are supported on shaft 36, provided with pulley 37, engaged by belt 38, which belt engages pulley 39 on shaft 40, driven by the'fiy-wheel 41 engaging pulley 42.0n shaft 40.- The'flywheel and the pulley 42 are covered with a suitable friction-surface 43 on the former and 44 on the latter.

45 represents vertically-movable members or rods to which the eraser-holders are attached and connected to arms 46 on the shaft 47 by links 48 to raise the erasers 4 and beat them on the perforated section 19 of the tables 12, the rods 45 being returned and the erasers beaten by the resiliency of a spring 49 engaging one of the crank-arms 4G and secured at its ends to the tables 12 by bolts 50 50, as shown in Fig. 2, and the rods are guided in brackets 51, secured to one side of the case 1, the shaft 47 being supported on brackets 52, resting on the tables 12.

Each eraser-holder 18 is provided with a spring 53, secured thereto to extend down over its sides, as shown in Figs. 3, 5, and 5, to engage and secure an eraser to the holder while it is being beaten, and the erasers are automatically released after they have been beaten by rods 54, having right-angled ends 55, which engage the spring, and the opposite ends of said rods 54 are provided with cranks 56, connected by a wire 57, and the wire is connected to an elongated link-like trip 58, whose lower end enters a groove 59 in the feed-roll 17 while erasers are being beaten and strikes against the upper surface of an oncoming eraser toward the holder 18 and turns the rods 54 on their axes, which press the springs 53 out from the holder and release the erasers. The lower face 60 of the holder 18 is convex to fit the concave upper surface 61 of an eraser, and the trip-link 58 is guided in loops 2 on the eraser-holder.

From the shaft 47 extends an arm 63, (see Figs. 2, 4, and 8,) provided with a frictionroller 64, which is engaged by arms 65 on shaft 66 for raising the rods 45 and the erasers. The shaft is supported in adjustable bearings 67 on brackets 68 and is driven by a chain 69 engaging a sprocket-wheel 70 on said shaft and a sprocket-wheel 71 on shaft 72, which shaft is provided with sprocket-wheel 89, and said sprocket-wheel is connected to sprocket-wheel 30 on the main power-shaft bya chain 73. (See Figs. 2 and 3.)

The feed-rolls 16, 17, and 22 are covered with a friction-producing substance, such as felt or its equivalent, as shown at 74 in Figs. 4 and 5, and the erasers as they leave the tables 12 are brushed and fall upon doors 75 and are discharged from the machine, and the doors are again closed automatically by springs 76 engaging an arm 77 on the rod 78 at one end and secured to the case at the opposite end.

The erasers are guided on the plate 12 by vertical flanges 79 to keep them in line with the eraser-holder and the brush 21, and the dust removed from the erasers is collected in a tray or drawer 80 and removed from the inclosing casing through opening 81.

Having thus fully described my invention, what I claim is- 1. An eraser-cleaner having a movable member, an eraser-holder secured to said member, and means for automatically engaging and disengaging an eraser.

2. An eraser-cleaner having a movable member, an eraser-holder secured to.said member, springs for securing an eraser thereto, and an automatically engaging and disengaging mechanism.

3. An eraser-cleaner having a movable member, an eraser-holder secured to said member and provided with a convex face, springs on the sides thereof, and a tripping device connected to said springs.

4. An eraser-cleaner having a movable member provided with a block having eraserengaging springs thereon, a vertically-movable tripping-rod, and connections between the springs and said rod.

5. An eraser-cleaner having a movable member, an eraser-holder secured to said member, and means for feeding erasers to the eraser-holder.

6. An eraser-cleaner having a movable member, an eraser-holder secured to said member and a revoluble feed device engaging the side of an eraser to feed the eraser to the holder.

7. An eraser-cleaner having a movable member, an eraser-holder secured to said member, and rolls engaging one side and one face of an eraser.

8. An eraser-cleaner having a movable member, an eraser-holder secured to said member, a perforated plate on which erasers are beaten, and means for feeding erasers to the holder.

9. An eraser-cleaner having a movable member, an eraser-holder secured to said member, and a brush for engaging the face of an eraser after it has been beaten.

10. An eraser-cleaner having a movable member, an eraser-holder secured to said member, an eraser-feed mechanism, a perforated plate on which the erasers are beaten an 7 opening in said plate beyond the perforations, and a brush engaging the face of an eraser while passing over said openin 11. An eraser-cleaner having a movable member, an eraser holder secured to said member and provided with springs to engage an eraser, levers engaging the springs, rolls for feeding erasers to the eraser-holder, one of which rolls is provided with a groove, and an elongated linklike trip engaging the grooved roll.

12. An eraser-cleaner having a movable member provided with an eraser-holder having springs to engage an eraser, a roll and a resilient rod engaging the sides of an eraser, rolls engaging the face of the eraser, and an automatic tripping device for releasing an eraser from the holder.

13. An eraser-cleaner having an inclosing casing, inlet and discharge eraser-openings provided with closures, means for beating erasers, a chute for conducting erasers, and

. means for feeding erasers to the holders of the ing an opening therein, feed-rolls under the beating mechanism. plate and in said opening, a chute above the 14. An eraser-cleaner having a plurality of opening, a discharge forerasers, and means movable members provided with eraser-holdfor imparting motion to the movable member. 15

5 ers, means for feeding erasers to each holder, In testimony whereof I aifix my signature a shaft having cranks connected to said movin presence of two witnesses. able members, and an operating mechanism engaging said shaft.

15. An eraser-cleaner having a movable 1 Witnesses: to member provided with an eraser-holder, a ta- ELIZABETH HOMBURG, ble or plate on which erasers are beaten hav- FLORENCE FOSTER.

JAMES A. JONES. 

